I cannot send out any emails. I can receive them.

A couple of days ago some of my emails came back as undeliverable. I sent them again and they went through. This has continued and was annoying but I could live with it. This evening I am no longer able to send any emails.

I have checked the Service Status with my ISP and they are saying there are no problems.

I have checked my Accounts > Properties and they seem to be as they were.

Any suggestions?

Also any recommendations for an online email service I can use temporarily?

Try a System Restore to a point prior to the problem:

start > All Programs > Accessories > System Tools > System Restore


Doesn't your ISP offer multiple accounts? If so try creating a new account through your ISP.

As to on-line either Hotmail

http://login.live.com/login.srf?id=2...=1033&_lang=EN

or Yahoo are common and free.

https://login.yahoo.com/config/login_verify2?&.src=ym